ORCHID CONFERENCE. 133 



90 SERTIFERA, Lindley. 



One species only known, wild in Ecuador (S. purpurea, 

 Lindley.) 



291. SIGMATOSTAUX, Keichenbach f. 



Seven species, wild in Tropical America. 



292. Sobralia, Kuiz and Pavon. 



Thirty species are wild on the Andes of Tropical America, 

 Peru, Mexico, and Guiana. They are reedy herbs, 

 bearing large Cattleya-like flowers, and represented 

 in the West the Arundinas of the Eastern Tropics. 

 S. macrantha and its varieties are often met with in 

 collections. See Lindl., Sert. Orch., t. 29 ; Bateman, 

 Orch. Mex., t. 26, 37 ; Bot. Mag., t. 4446, 4570, 

 4682, 4882 ; Bot. Keg., 1841, t. 17. 

 *S. macrantha albida, Gard. Chron., 1871, 906. 



203. SOLENIDIUM, Lindley. 



Only one species, wild on the Colombian Andes, and 

 allied to Oncidia. 



294. Sophronitis, Lindley. 



Four or five species, mostly from the Organ Mountains in 

 Brazil. They are showy little epiphytes, with scarlet, 

 butterfly-like flowers. S. coccinea and S. grandiflara 

 are very popular in gardens. See Lindl., Sert. Orch., 

 t. 5, f. 2 ; Bot. Mag., t., 3677, 3709 ; Flor de Serres, 

 t. 1716. 

 -S. grandiflora, Gard. Chron., 1884, xxii., 561. 



295. Spathoglottis, Blume. 



Ten or more species, wild in India, South China, 

 Malaysia, Pacific Islands, and Australia. Terrestrial 

 herbs, often bearing showy flowers on erect spikes. 

 " Paxtonia " is a pelorioid form of this genus. See 

 Gard. Chron., 1882, xviii., 532. 

 *S. Lobbi, Gard. Chron., 1882, xviii., 532. 



296. Spiranthes, L. C. Eichard. 



About a hundred species, of world- wide distribution. 

 Few are showy, except one or two species of 

 Stenorhynchus. Spiranthes Romanzoviana ( = S. gem- 

 mipara), wild in the South of Ireland, is unknown 

 elsewhere in Europe, but extends from the Atlantic 



